Hunt for Antarctica's 'missing meteorites' 英国科学家将赴南极寻找“失踪的陨石”
<p><span word="Hunt">Hunt</span> <span word="for">for</span> <span word="Antarctica">Antarctica</span>'<span word="s">s</span> '<span word="missing">missing</span> <span word="meteorites">meteorites</span>' 英国科学家将赴南极寻找“失踪的陨石” </p><p><span word="Play">Play</span> <span word="audio">audio</span> <span word="file">file</span> 文字稿 首个远征南极寻找铁陨石的英国科学考察组已获得开展探险的许可。收藏在世界各地的太空陨石大多是在南极大陆上捡到的。覆盖该地区的白色冰层使搜寻这些黑色残留物的任务变得格外有成效。但是含铁的陨石却很少在南极大陆上被发现，其中有何奥妙吗？请听 <span word="Jonathan">Jonathan</span> <span word="Amos">Amos</span> 的报道。</p><p><span word="It">It</span>'<span word="s">s</span> <span word="a">a</span> <span word="mystery">mystery</span> <span word="that">that</span>'<span word="s">s</span> <span word="long">long</span> <span word="puzzled">puzzled</span> <span word="scientists">scientists</span>. <span word="Why">Why</span> <span word="are">are</span> <span word="so">so</span> <span word="few">few</span> <span word="iron">iron</span> <span word="meteorites">meteorites</span> <span word="picked">picked</span> <span word="up">up</span> <span word="off">off</span> <span word="the">the</span> <span word="ice">ice</span> <span word="of">of</span> <span word="Antarctica">Antarctica</span>? <span word="They">They</span> <span word="must">must</span> <span word="fall">fall</span> <span word="evenly">evenly</span> <span word="across">across</span> <span word="the">the</span> <span word="earth">earth</span>, <span word="but">but</span> <span word="desert">desert</span> <span word="regions">regions</span>, <span word="for">for</span> <span word="example">example</span>, <span word="yield">yield</span> <span word="ten">ten</span> <span word="times">times</span> <span word="as">as</span> <span word="many">many</span> <span word="lumps">lumps</span> <span word="of">of</span> <span word="space">space</span> <span word="metal">metal</span>.</p><p><span word="Now">Now</span> <span word="Manchester">Manchester</span> <span word="University">University</span> <span word="mathematicians">mathematicians</span> <span word="think">think</span> <span word="they">they</span> <span word="have">have</span> <span word="the">the</span> <span word="answer">answer</span>. <span word="Their">Their</span> <span word="studies">studies</span> <span word="indicate">indicate</span> <span word="these">these</span> <span word="iron">iron</span>-<span word="rich">rich</span> <span word="rocks">rocks</span> <span word="have">have</span> <span word="a">a</span> <span word="trick">trick</span> <span word="to">to</span> <span word="hide">hide</span> <span word="away">away</span> <span word="from">from</span> <span word="collectors">collectors</span>. <span word="Because">Because</span> <span word="the">the</span> <span word="rocks">rocks</span> <span word="are">are</span> <span word="made">made</span> <span word="of">of</span> <span word="metal">metal</span>, <span word="they">they</span> <span word="are">are</span> <span word="able">able</span> <span word="to">to</span> <span word="conduct">conduct</span> <span word="the">the</span> <span word="heat">heat</span> <span word="of">of</span> <span word="the">the</span> <span word="sun">sun</span> <span word="very">very</span> <span word="efficiently">efficiently</span> <span word="to">to</span> <span word="their">their</span> <span word="undersides">undersides</span>. <span word="This">This</span> <span word="melts">melts</span> <span word="the">the</span> <span word="surrounding">surrounding</span> <span word="ice">ice</span>, <span word="enabling">enabling</span> <span word="them">them</span> <span word="to">to</span> <span word="sink">sink</span> <span word="downwards">downwards</span> <span word="and">and</span> <span word="out">out</span> <span word="of">of</span> <span word="sight">sight</span>.</p><p><span word="The">The</span> <span word="Manchester">Manchester</span> <span word="team">team</span> <span word="has">has</span> <span word="just">just</span> <span word="won">won</span> <span word="funding">funding</span> <span word="to">to</span> <span word="go">go</span> <span word="test">test</span> <span word="its">its</span> <span word="idea">idea</span> <span word="and">and</span> <span word="plans">plans</span> <span word="to">to</span> <span word="find">find</span> <span word="the">the</span> <span word="missing">missing</span> <span word="meteorites">meteorites</span> <span word="and">and</span> <span word="dig">dig</span> <span word="them">them</span> <span word="up">up</span> <span word="with">with</span> <span word="the">the</span> <span word="aid">aid</span> <span word="of">of</span> <span word="landmine">landmine</span> <span word="detection">detection</span> <span word="technology">technology</span>.</p><p>词汇表 <span word="iron">iron</span> <span word="meteorites">meteorites</span> 陨铁，铁陨石</p><p><span word="picked">picked</span> <span word="up">up</span> 被捡起，被拿走</p><p><span word="desert">desert</span> <span word="regions">regions</span> 沙漠地区</p><p><span word="yield">yield</span> 给出、带来</p>
页:
[1]